Revert of [i18n] chromeos login i18n-content to $i18n{}

chrome/browser/resources/chromeos/login/oobe_update.html

Index: chrome/browser/resources/chromeos/login/oobe_update.html
diff --git a/chrome/browser/resources/chromeos/login/oobe_update.html b/chrome/browser/resources/chromeos/login/oobe_update.html
index 45aa0fd7f54f74922ab684b86f62dbe0468a51ae..d7ea1d46c8b3c5485ca5c83f88797faf678812a2 100644
--- a/chrome/browser/resources/chromeos/login/oobe_update.html
+++ b/chrome/browser/resources/chromeos/login/oobe_update.html
@@ -30,10 +30,9 @@
     <oobe-dialog hidden="[[!checkingForUpdate]]">
       <iron-icon icon="oobe-update:googleg" class="oobe-icon"></iron-icon>
       <div class="header">
-        <h1 class="title">$i18n{checkingForUpdates}</h1>
+        <h1 class="title" i18n-content="checkingForUpdates"></h1>
         <div class="subtitle" id="checkingForUpdateCancelHint"
-            hidden="[[!cancelAllowed]]">
-          $i18n{cancelUpdateHint}
+            i18n-content="cancelUpdateHint" hidden="[[!cancelAllowed]]">
         </div>
       </div>
       <div class="footer flex layout vertical">
@@ -43,11 +42,10 @@
     <oobe-dialog hidden="[[checkingForUpdate]]">
       <iron-icon icon="oobe-update:googleg" class="oobe-icon"></iron-icon>
       <div class="header">
-        <h1 class="title">$i18n{updatingScreenTitle}</h1>
-        <div class="subtitle">$i18n{installingUpdateDesc}</div>
+        <h1 class="title" i18n-content="updatingScreenTitle"></h1>
+        <div class="subtitle" i18n-content="installingUpdateDesc"></div>
         <div class="subtitle" id="updatingCancelHint"
-            hidden="[[!cancelAllowed]]">
-          $i18n{cancelUpdateHint}
+            i18n-content="cancelUpdateHint" hidden="[[!cancelAllowed]]">
         </div>
       </div>
       <div class="footer flex layout vertical">